Back plate bleed?

[djhurley92]

Hey,

Scanned some negatives from my IIIf on a Coolscan V, noticed that with dark negatives you get a lot of light bleed from adjacent frames (see below), and also light bleeding from the frame towards the sprocket holes. Is this normal?! I know you have to crop scans but it looks like I'd have to lose quite a lot of the image on dark shots next to light shots.

I don't know what this is, but I called it 'back plate bleed' because it looks like light reflected off the back plate and back onto the film, that probably didn't happen though.

The lens was a good condition Summitar.

Thanks

P.s. I scanned shiny side up which I'm pretty sure is correct for a Coolscan V.

P.p.s. this is Velvia 50 slide film

 

[shimokita]

With b&w negative I sometimes get some bleed in the (almost white) sky area (along the perforations) using the same scanner... not so often between the frames. Just for fun try scanning the same image in "reverse", same side up, just opposit leading edge.

Sunny side up... when viewed from the "shiny" side, the image is the actual orientation, not the mirrored point of view.

Is the (reversal) film mounted or six frames per?

Casey

 

[djhurley92]

With b&w negative I sometimes get some bleed in the (almost white) sky area (along the perforations) using the same scanner... not so often between the frames. Just for fun try scanning the same image in "reverse", same side up, just opposit leading edge.

Sunny side up... when viewed from the "shiny" side, the image is the actual orientation, not the mirrored point of view.

Is the (reversal) film mounted or six frames per?

Casey

I was using the six-frame scanner module. You're right to suspect the scanner as actually looking at the negatives I can't see this. So perhaps I'm doing something wrong? I'll give it a go rotated like you said. Thanks

 

[sanmich]

My coolscan does something very similar, and shows a darker band at the side of the frame.
I'm talking negative and yours is a slide so that could be the same behaviour.

 

[djhurley92]

My coolscan does something very similar, and shows a darker band at the side of the frame.
I'm talking negative and yours is a slide so that could be the same behaviour.

Okay fair enough. Maybe mounting is the answer to getting rid of this, but it's a bit excessive...

 

[Dez]

But is it on the negs? If so, don't blame the scanner. An image going into the sprocket holes is a common problem for these cameras, as when they were made, cassettes were a tiny bit longer. A felt washer below the film cassette may be the answer. If you are getting bleed from the next frame, I would suspect tired pressure plate springs.

Cheers,
Dez

 

[Ron (Netherlands)]

same behavior with my coolscan when scanning slides